Boilers in Live Oak: the short list of buildings that should have one

Start with the bill: FPL in town, SVEC past the city line

Pull up a summer electric statement from inside Live Oak, Wellborn or Houston, where FPL serves the meter, or from anywhere else in the county on Suwannee Valley Electric Cooperative. The cooling months dominate it. Heating shows up as a small bump in January and maybe February. That shape is why a boiler is a hard sell in Suwannee County: you would be buying a sophisticated heating plant for a season that barely registers on the bill, while the real money goes out the air conditioner.

So this page is short on persuasion and long on honesty. A boiler heats water and sends it through radiators, baseboards or floor tubing. It does nothing for July. For most houses from the downtown bungalows to the acreage lots at Savannah Plantation, a heat pump covers heating as a byproduct of the cooling you need anyway.

Who is on the short list

• Older commercial buildings downtown that already have hydronic heat. Some of the brick structures near Ohio Avenue were built or renovated with radiators, and replacing a tired boiler with a condensing model is cheaper than ripping it all out.
• Custom new construction on the one-acre lots west of town where the owner wants radiant floors in a tile-heavy house and is willing to pay for comfort on the few cold mornings.
• Farm and processing buildings with a large hot-water demand where a combination boiler earns its keep year-round, not just in winter.
• Advent Christian Village-style campuses and institutional buildings with central plants, which are engineered projects rather than a residential sale.

If your building is not on that list, read the furnace and heat pump pages instead.

Putting one into an existing building against designing around one

In new construction the piping goes in before the slab or inside open walls, and the boiler is a modest line item in a large budget. In a retrofit, every loop has to be routed through finished floors and walls, and the cost multiplies. Our rule for Live Oak: we will retrofit a boiler into a building that already has hydronic distribution, and we will design one into a new build if the owner wants it. We will not recommend tearing up a finished 1990s River Woods house to add one.

Talk to us about hydronic heat

Where the ducts already are, and why that decides it

Almost every house in this county has ducts: attic flex in the ranches and two-stories, belly ducts under the manufactured homes, closet systems in renovated bungalows. Those ducts carry the cooling you cannot live without here, and they can carry heat from a heat pump or furnace at no extra cost. A boiler does not use them. Buying one means paying for a second distribution system that only runs eight weeks a year. The ductwork, more than the climate, is what rules boilers out.

Sizing for a Suwannee County winter

Where a boiler does belong, it gets sized to the building’s actual heat loss on a design night in the 20s, not to the nameplate of whatever is being replaced. Old boilers in downtown buildings are routinely two or three times too large, which is why they short-cycle and waste fuel. A modern condensing boiler with outdoor reset runs cooler water on the many 45-degree mornings and only ramps up for the real freezes.

Water quality matters as much as size. Well water here carries iron, hardness and hydrogen sulfide, and all three attack a heat exchanger. Any boiler we install outside the city water system gets a filled, treated closed loop, and we will want the make-up water tested before we quote.